NASA @NASA
@brentorr @NASAPersevere Barely! Mars has about 500 times more carbon dioxide than oxygen. But get this: @NASAPersevere has an instrument aboard called MOXIE that converts tiny amounts of CO2 into oxygen. It's a tech demo that could have big benefits for future human missions: https://t.co/zAkUVkBa5i — PolitiTweet.org
